论文标题
无噪声按需原子频率梳量量子记忆
Noise Free On-Demand Atomic Frequency Comb Quantum Memory
论文作者
论文摘要
我们提出了原子频率梳子协议的扩展，该协议利用鲜明的效果执行无噪声，按需控制。该协议的实验实现已在pr $^{3+} $：y $ _2 $ _2 $ $ _5 $固态系统中实现，并实现了0.8 $μ$ S的存储时间的召回效率为38 \％。使用明亮的脉冲和弱相关状态进行实验，后者使用输入脉冲$ \ sim 0.1 $实现了$ 570 \ pm 120 $ $ 570 \ pm 120 $的信噪比。发现更长的存储时间的主要限制是可实现的最小峰值宽度，可用于pr $^{3+} $：y $ _2 $ _2 $ sio $ _5 $。我们采用已建立的原子频梳模型的改编，以基于欧盟$^{3+} $：y $ _2 $ _2 $ sio $ _5 $来研究基于欧盟$^{3+} $的按需，宽带宽度，内存。由此，我们确定即使没有求助于自旋波存储的情况，只要100美元$ $ s的存储时间也可能是实用的。
We present an extension of the atomic frequency comb protocol that utilizes the Stark effect to perform noise-free, on-demand, control. An experimental realization of this protocol was implemented in the Pr$^{3+}$:Y$_2$SiO$_5$ solid-state system, and a recall efficiency of 38\% for a 0.8 $μ$s storage time was achieved. Experiments were performed with both bright pulses as well as weak-coherent states, the latter achieving a signal-to-noise ratio of $570 \pm 120$ using input pulses with an average photon number of $\sim 0.1$. The principal limitation for a longer storage time was found to be the minimum peak width attainable for Pr$^{3+}$:Y$_2$SiO$_5$. We employ an adaptation of an established atomic-frequency comb model to investigate an on-demand, wide-bandwidth, memory based on Eu$^{3+}$:Y$_2$SiO$_5$. From this we determine that a storage time as long as 100 $μ$s may be practical even without recourse to spin-wave storage.
